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Isolation and Flow Cytometric Analysis of Glioma-infiltrating Peripheral Blood Mononuclear Cells
12:52

Isolation and Flow Cytometric Analysis of Glioma-infiltrating Peripheral Blood Mononuclear Cells

Published on: November 28, 2015

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BRAF overexpression induces rampant glioma proliferation independent of phospho-EGFR expression

Mei Li1, Minghai Wei2, Zhenfu Jiang2

  • 1Laboratory Center, The Second Hospital of Dalian Medical University, Dalian, The People's Republic of China.

Advances in Clinical and Experimental Medicine : Official Organ Wroclaw Medical University
|January 26, 2015
PubMed
Abstract

Insights

BRAF overexpression drives glioma development independently of EGFR activation. Molecular profiles in gliomas vary with patient age, impacting targeted therapy strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Glioma prognosis remains poor with conventional treatments.
  • Molecular targeted therapy is a growing trend for gliomas.
  • Tumor molecular characteristics differ across tumor types and ethnicities.

Purpose of the Study:

  • Investigate EGFR pathway component expression in gliomas.
  • Provide data for molecular targeted glioma treatment.
  • Understand variations in glioma molecular profiles.

Main Methods:

  • Immunohistochemistry used to detect EGFR, KRAS, BRAF, PI3K, phospho-EGFR, and Ki67 expression.
  • Study included 82 glioma specimens.
  • Correlated molecular markers with clinicopathological features.

Main Results:

  • EGFR expression correlated positively with patient age.
  • EGFR overexpression linked to phospho-EGFR expression.
  • In EGFR-activated gliomas, EGFR, BRAF, and PI3K overexpression correlated with proliferation.
  • In non-phospho-EGFR gliomas, BRAF overexpression alone related to proliferation.

Conclusions:

  • BRAF overexpression is an independent driver of glioma tumorigenesis.
  • EGFR pathway activation influences proliferation differently based on phospho-EGFR status.
  • Glioma molecular characteristics are age-dependent.

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